Synthesis and Structural Characterization of Polyimide Containing Diphenylsiloxane Unit

被引：0

作者：

Takahashi, Riku ^{[1
]}

Hatakeyama-Sato, Kan ^{[1
]}

Nabae, Yuta ^{[1
]}

Hayakawa, Teruaki ^{[1
]}

机构：

[1] Tokyo Inst Technol, Sch Mat & Chem Technol, Dept Mat Sci & Engn, S8-813,2-12-1-S8-36 Ookayama,Meguro Ku, Tokyo 1528552, Japan

来源：

JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY | 2024年 / 37卷 / 05期

关键词：

Random copolymer; Poly(dimethylsiloxane); Poly(diphenylsiloxane); Polyimide; RING-OPENING POLYMERIZATION; FILMS; WATER;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A random copolymer composed of poly(dimethylsiloxane) (PDMS) and poly(diphenylsiloxane) (PDPS), with a controlled molecular weight and a narrow molecular weight distribution, was synthesized. This copolymer, PDMS- r-PDPS, was incorporated into polyimide to create PI(PDMS- r-PDPS) through a two-step chain-end modification process, polycondensation with 4,4'-biphenyltetracarboxylic dianhydride (BPDA), and subsequent heat treatment at 240 degrees C . The resulting PI(PDMS- r-PDPS) was formed into a self-standing film, exhibiting a 5% weight loss temperature of 432 degrees C and a glass transition temperature of-32.5 degrees C originating from the PDMS- r-PDPS chain's glass transition. Wide-angle X-ray diffraction (WAXD) analysis revealed that the synthesized PI(PDMS- r-PDPS) possessed an amorphous structure coexisting with a slightly ordered structure.

引用

页码：489 / 496

页数：8

共 25 条

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